so which weber carb would be best fitted on 4g15? do i need other things too, i dun think is juz tat simple, can put twin carb? how mod the engine with weber carb?( like the best way of delivering the max power, something like tat) twin dcoe 40? dcnf 40, 44, 52??
any weber carbs can fit any engine... as long as the tuning is correct for ur engine spec and the adaptor made can fit ur engine intake manifold...
one of the benefits of weber carbs is dat they can change jettings easily... hence, by changing the jets alone allows it to be used in many engine applications.... of coz there is not jz 1 jet to change... single carburetor alone has multiple jets and each has to correlates each other to give u optimum tuning....
twin weber application is similar with single weber carb... but instead of 1 carburetor supplying air and fuel ratio to 4 cylinders, it has its individual barrel (1 weber 2 barrel) for each cylinder... hence, syncronizing each of them takes lots of time and patients... ask any mechanic, they'll say tuning twin carburetor (carburetor engine) or individual throttle body (fuel injection) is the toughest....
for most single down draught weber application, u dont have to change intake manifold... use back ur own intake manifold and custom make the adaptor to fit the weber to ur intake manifold...
twin carbs meanwhile needs to have its custom intake manifold made... twin carbs are usually side-draught carbs.....
for more info on down-draught and side-draught carbs, go google....